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LENJEX industrial ultrasonic cleaning equipment
Aerospace components in a cleaning basket

LENJEX Industrial Cleaning

Aerospace & Defense Parts Ultrasonic Cleaning

Aerospace and defense components demand controlled, repeatable cleaning to particle and residue limits before assembly, inspection or surface treatment.

Why Ultrasonic

Ultrasonic cleaning for Aerospace & Defense

Aerospace and defense parts are machined from high-performance alloys and combine tight tolerances, internal passages and sensitive surfaces. Ultrasonic cavitation reaches these geometries consistently, removing machining oil, chips, polishing compound and handling residues without aggressive manual work that could damage a finished part.

The process is commonly validated against defined particle limits for precision cleanliness control. Parts such as turbine and valve components, fuel-system pieces and structural fittings are reviewed with the multi-tank ultrasonic system or, for high-value work, a vacuum ultrasonic cleaner.

Frequency, chemistry, filtration, rinsing and drying are selected for the alloy and the required cleanliness, then confirmed during trial cleaning.

Inspection of machined aerospace components
  • Repeatable particle and residue removal for quality-critical parts
  • Cleaning of internal passages, blind holes and complex features
  • Controlled chemistry that protects high-performance alloys
  • Documented cycles that support traceability and inspection
  • Reduced manual finishing and risk of part damage

Typical Workpieces

Parts in this application

  • Turbine and compressor components
  • Valve bodies and hydraulic fittings
  • Fuel-system and hydraulic parts
  • Structural fittings and brackets
  • Landing-gear components
  • Actuator and servo parts

Contamination

Soils to evaluate

  • Machining and cutting oils
  • Metal chips and fine particles
  • Polishing and lapping compound
  • Fingerprints and handling residues
  • Preservative and corrosion-prevention oils
  • Drawing and forming lubricants
Engineer cleaning precision aerospace parts

Cleanliness Target

Define clean before choosing equipment

Acceptance is often based on gravimetric or counted particle limits, residue checks or surface inspection tied to the next operation.

The same inspection method should be used for trial cleaning and production, with agreed sampling and handling.

Recommended Sequence

A process route for evaluation

The final sequence depends on soil loading, material, rinse quality and drying behavior.

  1. Step 1Pre-clean to remove heavy chips and loose soil
  2. Step 2Ultrasonic wash with controlled chemistry
  3. Step 3Multi-stage rinse to remove carryover
  4. Step 4Vacuum or hot-air drying matched to cavities
  5. VerifyInspect against the particle or residue limit

Recommended Equipment

Systems to compare

The final specification follows process testing and production analysis.

Process Controls

Control the variables that change the cleaning result

Confirm the part, soil, loading and final handling before fixing equipment settings.

Control 01

Material and geometry

Record surfaces, cavities and features that can trap air or liquid.

Control 02

Soil condition

Test the heaviest representative contamination, not an ideal sample.

Control 03

Basket loading

Keep acoustic access and part spacing consistent with production.

Control 04

Rinse and drying

Match downstream handling to residue and corrosion risks.

System Selection

Match the cleaning route to production flow

Stage count and automation follow the validated process and required output.

Batch

Single-tank route

Compare for focused washing where rinsing and drying are managed separately.

Multi-stage

Wash, rinse and dry

Add controlled stages when carryover and final condition matter.

Automatic

Repeatable transfer

Evaluate automation when output, handling or recipe control requires it.

Acceptance

Define how the cleaned part will be checked

Use the same practical inspection method for trial samples and production parts.

  • Agree the surface or residue limit
  • Check hidden and difficult features
  • Record rinse, drying and handling conditions
  • Compare results before the next operation

Representative Trial

Confirm the process with real parts and loads

Trial evidence should cover normal production and the most difficult expected condition.

  1. DescribePart, material and contamination.
  2. LoadUse realistic spacing and orientation.
  3. TestRecord chemistry, time and temperature.
  4. VerifyInspect with the agreed method.
Plan a cleaning trialSend project details

Application Questions

Planning the cleaning study

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